A simple maths puzzle has been leaving people stumped as they can't agree on the correct answer - can you work it out?

Which number must be inserted in place of the incorrect number? Show puzzle solution The number 75 must be replaced by the ...

Are you ready to prove your mental sharpness and IQ power in just 5 seconds? Only those with razor-sharp focus and heightened observation will spot the odd number in time.

September/1992024/Picture-Puzzle-Triangle.jpg" width="1200" height="675" /> Challenge your brain with this engaging picture ...

FT.com will bring you the crossword from Monday to Saturday as well as the Weekend FT Polymath.

In Connections, each category has a different difficulty level. Yellow is the simplest, and purple is the most difficult.

The article features an optical illusion challenge that tests math skills by requiring readers to spot an odd number among ...

Explore daily insights on the USA TODAY crossword puzzle by Sally Hoelscher. Uncover expert takes and answers in our ...